In geometry, a translation is the shifting of a figure from one place to another without rotating, reflecting or changing its size. This is done by moving the vertices of the figure the prescribed number of spaces on a coordinate plane and then drawing the new figure.
These PFDs are designed to keep the wearer in a vertical position, but it is the wearersâ responsibility to maneuver themselves into a face-up position. Type III PFDs will keep unconscious wearers face-up just as well as a Type II vest.
Ideally, the superior hypogastric plexus block is performed through the posterior approach, which requires that the patient lie in the prone position (i.e., lying face down). This position, however, may cause the patient to experience too much discomfort.